دانلود مقاله ISI انگلیسی شماره 71529
عنوان فارسی مقاله

مدارک و شواهد برای دو فرآیند تثبیت حافظه بلندمدت متمایز مربوط به خواب

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
71529 2015 11 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Evidence for two distinct sleep-related long-term memory consolidation processes
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Cortex, Volume 63, February 2015, Pages 68–78

کلمات کلیدی
هیپوکامپ؛ حافظه بلندمدت؛ فعال شدن مجدد؛ خواب بازیابی - تثبیت سیناپسی
پیش نمایش مقاله
پیش نمایش مقاله مدارک و شواهد برای دو فرآیند تثبیت حافظه بلندمدت متمایز مربوط به خواب

چکیده انگلیسی

Numerous studies examine the effect of a night's sleep on memory consolidation, but few go beyond this short time-scale to test long-lasting effects of sleep on memory. We investigated long-term effects of sleep on typical memory tasks. During the hours following learning, participants slept or stayed awake. We compared recall performance between wake and sleep conditions after delays of up to 6 days. Performance develops in two distinct ways. Word pair, syllable, and motor sequence learning tasks benefit from sleep during the first day after encoding, when compared with daytime or nighttime wakefulness. However, performance in the wake conditions recovers after another night of sleep, so that we observe no lasting effect of sleep. Sleep deprivation before recall does not impair performance. Thus, fatigue cannot adequately explain the lack of long-term effects. We suggest that the hippocampus might serve as a buffer during the retention interval, and consolidation occurs during delayed sleep. In contrast, a non-hippocampal mirror-tracing task benefits significantly from sleep, even when tested after a 4-day delay including recovery sleep. This indicates a dissociation between two sleep-related consolidation mechanisms, which could rely on distinct neuronal processes.

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